AS4665 — YONSEI-AS-KR Yonsei University

Network type: education

AS4665 announces 21 IPv4 prefixes covering 65,280 addresses and 0 IPv6 prefixes.

About this network

YONSEI-AS-KR is the campus network of Yonsei University in Seoul, one of South Korea's oldest and most prominent private research universities.

What it's used for

• Campus, research, and administrative networking across Yonsei's Sinchon and other campuses: labs, faculty and student services, libraries, and university-run systems.
• Roughly a /16 worth of IPv4 address space, a size typical of universities that were allocated addresses before conservation rules tightened.

Notable

• Yonsei is one of the "SKY" universities, the informal trio (with Seoul National and Korea University) at the top of Korean higher education, and its network is correspondingly large.
• Korean universities and research institutes were central to the country's early internet — Korea built one of the first TCP/IP networks outside the United States — which is why several of them hold low four-digit AS numbers.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 1.233.206.0/23
• 1.233.208.0/20
• 1.233.224.0/19
• 61.32.255.0/24
• 61.43.204.0/24
• 115.88.77.0/24
• 165.132.0.0/22
• 165.132.4.0/24
• 165.132.6.0/23
• 165.132.8.0/21
• 165.132.16.0/23
• 165.132.18.0/24
• 165.132.20.0/22
• 165.132.24.0/21
• 165.132.32.0/19
• 165.132.64.0/18
• 165.132.128.0/18
• 165.132.192.0/21
• 165.132.200.0/24
• 165.132.224.0/23
• 165.132.255.0/24

Upstream networks

• AS9318 SK Broadband Co Ltd
• AS4766 Korea Telecom
• AS3786 LG DACOM Corporation

Adjacent networks

• AS9318 SK Broadband Co Ltd
• AS4766 Korea Telecom
• AS3786 LG DACOM Corporation